It's been 5 years since Calibur defeated Muscular, Kamen Rider Calibur aka Raiden Kirigami is still living a normal human life. Information about Kirigami's past is kept strictly confidential by U.A and Raiden Corporation. Everyone knows that Kirigami is the adopted son of Raiden Ei aka Lightning Heroine: Raiden Shogun. He is also the adopted nephew of Raiden Makoto, the C.E.O of Raiden Corporation. 

During the time he lived with the Raiden family, Makoto and Ei always considered Kirigami as their own family, despite society's gossip about Ei and Kirigami. Because of Kirigami's dream of becoming a hero, Ei trained him with the most extreme exercises. From using Quirk, fighting with bare hands, using weapons, to even psychological manipulation.

Information about Kirigami's Quirks is also kept private from the public, as it would put himself and his new family at risk when it was revealed. Everyone only knows that Kirigami has the Molecular Manipulation Quirk. He is currently a student at Shinora Middle School. It can be said that no one in the school can compete with the title of "excellent valedictorian" of the school. 

Kirigami is a handsome, talented, brilliant, cool, calm and countless other good student. As a role model for girls to follow, but Kirigami has a bad habit of fighting. Kirigami can fight a lot, swear a lot, or fall asleep in class a lot, but Kirigami is a very affectionate person. He takes the word 'Friends' very seriously and anyone who dares to mess with Kirigami's class should have their hospital bills ready because Kirigami will keep them in the hospital for a few months.

Now it was lunch as Kirigami was heading outside to eat. Every lunch is either Kirigami buys food at the canteen or Makoto prepares it. Because there is a horror truth that Ei, a young, beautiful, talented heroine... but can't cook. However when he got outside he saw 2 people bullying a girl from his class. Kirigami wasn't going to let that slide so he went to stop it

Kirigami: OI! What are you animals doing in my area? Looks like you haven't seen the coffin yet, haven't wept? Need me to send you to the hospital? "Cracks his knuckles"

Bully 1: What are you going to do?

Bully 2: Yeah it's two against you!

Kirigami was getting ready to summon his Nexus blade when a teacher noticed the commotion and came over. Looking over he saw it was the chemistry teacher Takahashi Akira. He came with his lab coat nearly flying off as he ran over

Takahashi: "Yells" WHAT IS GOING ON HERE!?!

Kirigami: These two were trying to bully these three so I stepped in to stop them and help these three.

Bully 2: No way he's lying!

Takahashi: Really then we can look at the security cameras and see who is telling the truth

Hearing this caused the boys to pale. Seeing this caused Takahashi-sensei to smirk having caught them. Looking over to Kirigami he nodded and grabbed the shoulders of the two trouble makers.

Takahashi: Looking at your faces I think I can tell who was telling the truth. You two are coming with me to the principal's office to see the tape. If he's telling the truth you will be getting detention. We take bullying very seriously at this school. "Thought" Thank god that Kirigami hasn't hit anyone yet!

As the teacher dragged the two away Kirigami looked on in awe. A teacher actually looked out for students. Not to mention they were going to get in trouble and not get it swept away. They were going to be punished. Looking back he started helping the girl up.

Kirigami: You OK?

??????: Thank you... Um.....

Kirigami: Raiden Kirigami.

Little did he know this meeting would lead to the formation of his friend group and in the future maybe even more. Looking back Kirigami felt pretty lucky having been found by the Raiden family instead of staying on the streets.

(Time Skips)

Homeroom Teacher: All right, students, you're going to be high school students soon. They should be serious in their school choice because it will greatly affect their future.

The teachers at Shinora School all have to pass rigorous interviews and surveys. This school does not tolerate actions such as school bullying and discrimination.

Homeroom Teacher: Now, I'm going to hand out the papers where you want to go after this, but it seems that only Raiden and Kendo chose to go to U.A.?

Student 1: U.A? That national school?! It was in the top 0.2% this year, you know! Their acceptance rate is really low, too! 

Student 2: With Kendo, I don't know if she can get in? But with Raiden, it's 100 percent that he'll get in!

Hearing such words, Kirigami always felt uneasy. That's also why he has very few friends, most of the people who befriend him are usually looking to borrow the Raiden family's image to make a name for them or worse, turn him into a mobile ATM. Kirigami has no shortage of ways to deal with them.

(Time Skips)

Kirigami was on his way home with his family car.

Although Kirigami's house is not far from the school, for safety, Kirigami always has a bus to pick him up when he returns from school in the afternoon. Everything would be normal if there wasn't an explosion.

Kirigami: What the... "Yells" STOP THE CAR!

The driver immediately stopped the car, Kirigami immediately put on his mask and took out more weapons and put them in his robe.

(Seiken Swordriver-Suiseiken Nagare)

(A/N: Kirigami can use all the Seiken, Saber, Calibur and Falchion are the forms that Kirigami use most of his time)

Kirigami immediately got out of the car and headed for the explosion.

Driver: "Yells" MASTER KIRIGAMI!

Kirigami: "Yells" TELL THEM THAT I WILL COME HOME LATE!

As they ran around to see what was going on they saw a villain made of some sludge-like substance with a hostage causing chaos. They looked around to see what the heroes where doing.

Kamui: Backdraft can't you use your water to dilute the villain. The hostage is losing air!

Backdraft: I would if I could but we are next to a liquor store. I have to stop the fire from spreading or we could have a larger fire and casualty count. Can't your grab him with your quirk!

Death Arms: My quirk isn't suited for this situation.

Kamui: The explosions damaged the building next to it structural integrity. I am trying to keep it stable so its doesn't collapse, killing multiple people. Why aren't you doing anything Mount Lady? At least hold the building so I can try and save the child.

Mt Lady: The walk way is to narrow I can't walk through

Kamui: "Yells" THEN SHRINK DOWN AND RUN OVER BEFORE GROWING YOU IDIOT!!!

Looking at the villain, Kirigami noticed it was a boy with blonde spiky hair. Along that is a green broccoli hair boy is rushing on to help his friend. Kirigami was about to rush in to save them when suddenly, a huge book appeared out of nowhere. It then sucked part of the real world inside, trapping Kirigami, Sludge Villain, the two boys, and All Might inside.

Kirigami: This place is...

Child: "Cry loud" MOM!!! WHERE ARE YOU!!?? 

He said and about to run but Touma hold him tightly

Kirigami: "Yells" KID!! DON'T GIVE UP!!!! WE'LL FIND A WAY OUT FROM THIS PLACE!!!

Child: Are you sure???

Kirigami: Trust me.

Kirigami finds a way to get out of this place. Along the way, he encounters various animals and beautiful scenery, and he accidentally finds the cause.

(Golem Megid)

Kirigami confronts Golem Megid and finds the Sludge Villain dead. The two boys were saved by All Might

All Might: "Shocked" Young Raiden! 

Broccoli Boy: Raiden?

Kirigami: I'm gonna handle this...

Blonde Boy: I don't need your help!

Broccoli Boy: You can't! He has killed...

All Might: I trust you. Twilight Swordsman.

Broccoli Boy: Huh?

Kirigami: Good to hear that!

Golem: You... You are...

Kirigami then put the Driver on his waist.

Driver: SEIKEN SWORDRIVER!

He then takes out a Wonder Ride Book and opens it

(Lion Senki Wonder Ride Book)

(Lion Senki Wonder Ride Book Story Page)

WRB: LION SENKI! KONO AOKI TATEGAMI GA ARATA NI SHIRUSU KEDAKAKI OHJA NO TATAKAI NO REKISHI...(This blue mane marks a new history of the noble king's battle...)

Then Kirigami closes the WRB and inserts the book in the middle slot of Seiken Swordriver

Kirigami: Henshin!

He appears in a library surrounded by surging water. He performs a single horizontal slash before a lion released from the book circles him and forms armor, with the slash forming the visor, completing the transformation. Transforming with more than one Wonder Ride Book results in other constructs being released from the additional books and forming special armor around the corresponding section of the body. 

https://youtu.be/gAkYKaxNFM0

Suiseiken Nagare: NAGARE BATTOU! LION SENKI! NAGARE ISSATSU! HYAKUJUU NO OH TO SUISEIKEN NAGARE GA MAJIWARU TOKI KONPEKI NO TSURUGI GA KIBA WO MUKU! (Nagare draw sword! Lion Senki! One Nagare Book! When the King of Beasts and Suiseiken Nagare meet, the azure sword peels its fangs!)

(Kamen Rider Blades Lion Senki Form)

(Suiseiken Nagare)

Golem: "Shocked" How?! I thought the Sword Of Logos has perished?!

Blades: Well too bad! They are return!

Golem smashed its feet into the ground with great force, causing a large number of fists to surge towards Blades. But Blades quickly hurled himself away and held the sword tighter, covering the sword with water to increase his attack power, and Blades blocked the golem's attack with his sword. Blades began to retaliate by jumping down and then dashing down to the ground, slowly dodging the golem's attacks, and upon reaching the ground, Blades slides down to the ground, slams the sword and releases water from the sword, causing the golem to accept the attack. full, making the scenery back to the original scenery at the latest.

He just takes a new WRB and scans it on the Shingan Reader

(Eternal Phoenix Wonder Ride Book)

Suiseiken Nagare: ETERNAL PHOENIX! MM-HM!

Then he presses the trigger

Suiseiken Nagare: SHUUTOKU ISSEN!

Blades: Eien No Gekiryuu! (Eternal Riptide)

Blades slashed a large range with the power of the element of Water. That slash turned into a water phoenix and flew straight to the Golem Megid and annihilated it.

The people witnessed the battle between Blades and Megido, stunned at the power of the Mysterious Warrior and saw the warrior still in midair and his stance in which two hands held the sword to the right and tip. The sword was on the left and the right leg was raised and fell to the ground as usual. And child make a move to him.

Child: "Whisper" Thanks for saving us nii-chan.

Blades: You saw?

Child: Yea and I won't tell anyone.

Blades: Thanks kid.... But don't worry you'll not remembered when I was henshin and fought that thing.

Child: Cool....

People: Thanks for saving us!!!

Heroes: I'll arrestted you!!

Blades:  Shut the fuck up! You think I didn't see it!!!??? You saw that Golem for a moment and then you escaped and let a child be hurt!!! People like you don't deserve to be called heroes!!!!

Heroes: But..

All Might: Enough! He saved our lives! And what's more, I witnessed you guys running cowardly in the face of that Golem and leaving an injured child! I've watched him grow up, and he's definitely going to be a much better hero than you guys!

(A/N: All Might, U.A Staff and Kirigami's family knew about he is Twilight Swordsman)

That made the people enraged and cursed the heroes who wanted to capture them in order to build their reputation. and they bowed their heads in shame. And they saw the scenery, the atmosphere was disappearing.

Blades: So it's end for now.... It's time to go home.....

Meanwhile, the outside was filled with cops and heroes preparing for battle, but the barrier disappeared and all the people rushed out to find their loved ones. Everyone was happy to have survived, but later everyone saw the warrior standing with his back and looking at the back of the many heroes helping the people.

??: Who are you??

People: He was a guy who saved us!!!

Blades: Blades... Kamen Rider... Blades... The Twilight Swordsman!

After he finished speaking, a smog came upon his's body, and more and more mist engulfed Blades's face and completely disappeared.

Rdp(random people): It can't be...

Rdp2: Don't tell me.....

Everyone: "Yells" HE'S A KAMEN RIDER!!?? THE LEGENDARY WARRIOR WHO PROTECTED THE WORLD BEFORE KOSEI HAVE EXISTED!!??

Child: Twilight Swordsman...

All Might: "Thought" Way to go... young Raiden!

{Unknown place}

The mysterious hand that was writing the book was interrupted by the death of the Golem Megido.

??: We can just rewrite this book's continuation....

??: The worlds have been connected, after all....

??: It's seem the lost swords has reappeared......

??: Don't worry about him for now.....

Back with Kirigami, he returned to his car and the driver took him home. And of course, his family was furious when he risked his life like that and almost revealed his true identity.

Kirigami: Mom... Auntie....

(Left: Raiden Makoto. Right: Raiden Ei)

Ei: You have a lot to explain, young man!

Makoto: And no lying!

Kirigami: "Thought" I'm fucked up!

See you at: Volume 2: Prepare. The Entrance Exam